18119291 has 2 divisors, whose sum is σ = 18119292. Its totient is φ = 18119290.

The previous prime is 18119281. The next prime is 18119303. The reversal of 18119291 is 19291181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18119291 - 2¹⁴ = 18102907 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18119201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9059645 + 9059646.

It is an arithmetic number, because the mean of its divisors is an integer number (9059646).

Almost surely, 2^18119291 is an apocalyptic number.

18119291 is a deficient number, since it is larger than the sum of its proper divisors (1).

18119291 is an equidigital number, since it uses as much as digits as its factorization.

18119291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 32.

The square root of 18119291 is about 4256.6760506292. The cubic root of 18119291 is about 262.6518112037.

The spelling of 18119291 in words is "eighteen million, one hundred nineteen thousand, two hundred ninety-one".